}
				if len(matchLabels) > 0 {
					selector = mergeLabelSetWithSelector(matchLabels, selector)
				}
			}

			tsc := topologySpreadConstraint{
				MaxSkew:            c.MaxSkew,
				TopologyKey:        c.TopologyKey,
				Selector:           selector,
				MinDomains:         ptr.Deref(c.MinDomains, 1),   // If MinDomains is nil, we treat MinDomains as 1.

	if len(state.existingAntiAffinityCounts) > 0 {
		// Iterate over topology pairs to get any of the pods being affected by
		// the scheduled pod anti-affinity terms
		for topologyKey, topologyValue := range nodeInfo.Node().Labels {
			tp := topologyPair{key: topologyKey, value: topologyValue}
			if state.existingAntiAffinityCounts[tp] > 0 {
				return false
			}
		}
	}
	return true
}

			args: &config.PodTopologySpreadArgs{
				DefaultConstraints: []v1.TopologySpreadConstraint{
					{
						MaxSkew:           1,
						TopologyKey:       "node",
						WhenUnsatisfiable: v1.DoNotSchedule,
					},
					{
						MaxSkew:           2,
						TopologyKey:       "zone",
						WhenUnsatisfiable: v1.ScheduleAnyway,
					},
				},
				DefaultingType: config.ListDefaulting,
			},
		},

			pod:  st.MakePod().Name("p").Label("foo", "bar").Label("baz", "kar").Obj(),
			defaultConstraints: []v1.TopologySpreadConstraint{
				{MaxSkew: 3, TopologyKey: "node", WhenUnsatisfiable: v1.DoNotSchedule},
				{MaxSkew: 2, TopologyKey: "node", WhenUnsatisfiable: v1.ScheduleAnyway},
				{MaxSkew: 5, TopologyKey: "rack", WhenUnsatisfiable: v1.DoNotSchedule},
			},
			objs: []runtime.Object{

	c := &constraints[idx]
	for i := range constraints[:idx] {
		other := &constraints[i]
		if c.TopologyKey == other.TopologyKey && c.WhenUnsatisfiable == other.WhenUnsatisfiable {
			return field.Duplicate(path.Index(idx), fmt.Sprintf("{%v, %v}", c.TopologyKey, c.WhenUnsatisfiable))
		}
	}
	return nil
}

			pod:          st.MakePod().Name("p").PodAffinityIn("service", "zone", []string{"securityscan", "value2"}, st.PodAffinityWithRequiredReq).Obj(),
			newNode:      st.MakeNode().Name("node-a").Label("zone", "zone1").Obj(),
			expectedHint: framework.Queue,
		},
		{
			name:         "add a new node with matched pod anti-affinity topologyKey",

            - labelSelector:
                matchExpressions:
                - key: "service"
                  operator: "In"
                  values: ["bind"]
              topologyKey: "kubernetes.io/hostname"
              namespaces: []
      containers:
      - name: kubernetes-pause
        image: registry.k8s.io/pause:latest
      - name: app

            - labelSelector:
                matchExpressions:
                - key: "service"
                  operator: "In"
                  values: ["bind"]
              topologyKey: "kubernetes.io/hostname"
              namespaces: []
      containers:
      - name: kubernetes-pause

								{
									Key:      "security",
									Operator: metav1.LabelSelectorOpIn,
									Values:   []string{"S1"},
								},
							},
						},
						TopologyKey: "region",
					},
				},
			},
		},
	}
	stayWithS2InRegion := &v1.Affinity{
		PodAffinity: &v1.PodAffinity{
			PreferredDuringSchedulingIgnoredDuringExecution: []v1.WeightedPodAffinityTerm{
				{

						{
							TopologyKey:   `foo`,
							LabelSelector: &metav1.LabelSelector{},
						},
						{
							TopologyKey:   `beta.kubernetes.io/arch`,
							LabelSelector: &metav1.LabelSelector{},
						},
						{
							TopologyKey:   `beta.kubernetes.io/os`,
							LabelSelector: &metav1.LabelSelector{},
						},
						{
							TopologyKey:   `failure-domain.beta.kubernetes.io/region`,